twbs/bootstrap — pull request #10822 by hansede (2013-09-26 17:01:41+00:00)
Title: Fix for margin styling being improperly applied to button group descendants.

This change fixes a problem with button margins being applied to any button descending from a button group instead of just applying to the buttons that are children of the button group. In my case, this caused margin styling to unintentionally be applied to buttons in a popover that has a button group as an ancestor. Tested in Chrome.